To create a lightbox style popup, choose Popup from the Holler Box types.
Next, select a template. Holler Box Pro offers more template selections than the free version.
If you chose a template that uses an image, you can select an image from your computer. It is recommended that you choose a transparent .png file for a template like Above/Below, or any template that has overflow.
If you do not select an image, the box will display a default image.